used to or used to be?

—Is your mother a teacher?
—_________.

A. No.But she used to B.No.But she used to be

which one is right? when should we keep the word “be” ? thanks!

used to be

why?

Hi vaok,

[i]Is your mother a teacher?

No. But she used to be( a teacher)[/i]

Hi,

If you said simply ‘used to’, the question would have to be ‘used to what?’ The text is: She isn’t a teacher any longer but she used to be in the past. She doesn’t work as a consultant now but she used to.

You have to repeat the verb to complete ‘used to’ when you are referring back to the verb ‘be’.

Alan

thank you all very much!!!

And:

Does your mother teach?

No, but she used to.